[src/trunk]: src/sys/dev Forcefully detach children of audio instances.

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a46cc0b4e5da
branches:  trunk
changeset: 358583:a46cc0b4e5da
user:      nat <nat%NetBSD.org@localhost>
date:      Tue Jan 09 04:14:21 2018 +0000

description:
Forcefully detach children of audio instances.

This addresses part of PR kern/52889 as children of pad(4) were not
detaching.

diffstat:

 sys/dev/audio.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 195a333ac62b -r a46cc0b4e5da sys/dev/audio.c
--- a/sys/dev/audio.c   Tue Jan 09 04:10:27 2018 +0000
+++ b/sys/dev/audio.c   Tue Jan 09 04:14:21 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.448 2018/01/09 04:10:27 nat Exp $  */
+/*     $NetBSD: audio.c,v 1.449 2018/01/09 04:14:21 nat Exp $  */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.448 2018/01/09 04:10:27 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.449 2018/01/09 04:14:21 nat Exp $");
 
 #ifdef _KERNEL_OPT
 #include "audio.h"
@@ -894,7 +894,7 @@
        DPRINTF(("audio_detach: sc=%p flags=%d\n", sc, flags));
 
        /* Start draining existing accessors of the device. */
-       if ((rc = config_detach_children(self, flags)) != 0)
+       if ((rc = config_detach_children(self, flags | DETACH_FORCE)) != 0)
                return rc;
        mutex_enter(sc->sc_lock);
        sc->sc_dying = true;